{"entry-date":"2026-10-02","start-date":"1990-08-16","end-date":"","entity":31704860,"name":"4, HAY'S MEWS W1","dataset":"listed-building","typology":"geography","reference":"1248403","prefix":"listed-building","organisation-entity":16,"geometry":"","point":"POINT (-0.146813 51.508692)","quality":"authoritative","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1248403","listed-building-grade":"II"}